TreeEntryChange status is set incorrectly when doing Diff (Deleted instead of Renamed)

I took a diff between 42b22ab5fe78889aae058c3af342ea67b30b48d5 and e315208fe33d43964fb649935e3bbff2275fa101 which are two consecutive commits in Roslyn codebase. As you can see Github shows the status of all changes as renamed but libgit2sharp detects them as deleted.

Steps to reproduce:

1. Clone Roslyn's repo
2. Take a diff between these commits

foreach (TreeEntryChanges change in repo
                    .Diff.Compare<TreeChanges>(commitParents.Single().Tree, commit.Tree, compareOptions: compareOptions))
                {
                    // for all chnages change.Status=ChangeKind.Deleted
                }

使用所示的 TreeChanges 比較重現提交 42b22ab5fe78889aae058c3af342ea67b30b48d5 與 e315208fe33d43964fb649935e3bbff2275fa101 之間的 diff。追蹤 TreeEntryChanges 如何為這些變更指派 ChangeKind；當受影響的項目回報為 Renamed 而不是 Deleted 時，即表示完成。